Prince Harry's tell-all memoir which Buckingham Palace insiders fear could reveal secrets and information about the inner workings of the Royal Family appears to have been delayed again.
Publisher Penguin Random House had previously said the book would be released in autumn.
But the book has been noticeably absent from promotional material highlighting releases this year.
A royal insider told The Sun: "If this book’s coming out this year as originally planned it should be in the publisher’s marketing and promotional list — unless they’re planning a surprise or there’s been a delay.
"Its omission has raised lots of eyebrows in royal circles."
The Duke of Sussex's memoir will cover his time in the public eye from childhood to the present day.
Harry said his book will be written “not as the prince I was born but as the man I have become” and as an “accurate and wholly truthful” account of his life.
There are fears Harry will delve further into his troubled relationship with his father the Prince of Wales, write about his rift with brother William, or even name the royal accused of making racist remarks.
The Duke is also rumoured to be highly critical of Camilla, the Duchess of Cornwall.
A spokeswoman for Penguin Random House told the paper: "We don’t put every book on the list so there is nothing to be extrapolated from that.”
The Duke is rumoured to have been paid millions for the book, which he has vowed to donate to charity.